<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>欢迎来到登录界面</h1>
<form action="" method="post">
    用户名：<input type="text" name="username">
    密码：<input type="text" name="pwd">
    <input type="submit">
</form>
</body>
</html>